<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="shortcut icon" href="data:;base64,iVBORw0KGgo=">
  <style>
    html,
    body {
      margin: 0px;
      overflow: hidden;
      height: 100%;
    }
  </style>
</head>
<body>
  <script type="module">
/* eslint-disable */
const numberRegexp = /^[0-9]+$/;
class ZipCodeValidator {
    isAcceptable(s) {
        return s.length === 5 && numberRegexp.test(s);
    }
}

/* eslint-disable */
const validator = new ZipCodeValidator();
console.log(validator);
  </script>
</body>
</html>
